High-brightness privacy film with high light transmittance
By introducing transmission, absorption, and reflection units into the privacy film, combined with PET and AG hardening layers, the problems of low light transmittance and insufficient brightness of the privacy film are solved, achieving a privacy effect with high light transmittance and high brightness.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DONGGUAN JINCHUANGHE NEW MATERIALS CO LTD
- Filing Date
- 2025-08-07
- Publication Date
- 2026-06-02
AI Technical Summary
Existing privacy films have low light transmittance and insufficient brightness, which affects the user's visual experience and eye strain.
The privacy film adopts a body structure layer design, including transmission, absorption and reflection units, combined with optical grade PET film and AG hardening layer to enhance light transmittance and brightness.
The privacy screen protector has improved light transmittance and brightness, ensuring that screen content can be clearly viewed even in low-light environments, reducing eye strain.
Smart Images
Figure CN224317801U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of optical thin film technology, specifically a high-brightness privacy film with high light transmittance. Background Technology
[0002] With the widespread use of electronic devices, information security has become an increasingly important concern. Privacy screen protectors, as devices designed to protect screen information from unauthorized viewing, have seen widespread adoption. Most existing privacy screen protectors work by using optical polarization to limit the viewing angle within a certain range, thus achieving their privacy effect. However, current privacy screen protectors generally suffer from low light transmittance and insufficient brightness. Low light transmittance leads to a darker screen display and color distortion, affecting the user's visual experience; insufficient brightness not only increases eye strain but may also make it difficult to clearly see screen content in low-light environments. Utility Model Content
[0003] (a) Technical problems to be solved
[0004] To address the shortcomings of existing technologies, this invention provides a high-brightness privacy film with high light transmittance, solving the problem that current privacy films generally suffer from low light transmittance and insufficient brightness, which increases the user's eye strain and affects the user's visual experience.
[0005] (II) Technical Solution
[0006] To achieve the above objectives, this utility model specifically adopts the following technical solution:
[0007] A high-brightness privacy film with high light transmittance includes a privacy film body, the privacy film body includes a privacy structure layer, a PET layer and a PE protective film layer are sequentially attached to the lower surface of the privacy structure layer, and a PET layer, an AG hardening layer and a PE protective film layer are sequentially attached to the upper surface of the privacy structure layer. The privacy structure layer includes a plurality of equally spaced transmission units, and a light-absorbing unit is disposed between two adjacent transmission units.
[0008] Furthermore, both sides of the lower part of the light-absorbing unit are set as inclined surfaces, and an absorption unit is placed at the inclined surface. A reflection unit is placed between the absorption unit and the inclined surface at the lower part of the light-absorbing unit.
[0009] The spacing between the light-absorbing units is 5-10 μm.
[0010] Furthermore, the PET layer has a thickness of 20-50 μm and is bonded to the privacy structure layer with high-viscosity OCA adhesive.
[0011] Furthermore, the thickness of the PE protective film layer is 20-50μm, and the PE protective film layer is bonded to the PET layer and the AG hardened layer by high-viscosity OCA adhesive.
[0012] Furthermore, the thickness of the AG hardened layer is 20-50 μm, and the AG hardened layer is bonded to the PET layer with high-viscosity OCA adhesive.
[0013] (III) Beneficial Effects
[0014] Compared with the prior art, this utility model provides a high-brightness privacy film with high light transmittance, which has the following beneficial effects:
[0015] This invention utilizes an absorption unit to absorb the light source originally absorbed by the light-absorbing unit, and then reflects this portion of the light source into the transmission unit through a reflection unit, thereby increasing the brightness at the transmission unit and ensuring a brighter privacy film surface during use. At the same time, it uses an optical-grade PET film to reduce the absorption and scattering loss of light during transmission, providing users with a bright screen display effect, reducing eye strain, and allowing users to clearly view the screen content even in low-light environments. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the structure of this utility model;
[0017] Figure 2 This utility model Figure 1 A schematic diagram of the structure of the privacy film.
[0018] In the diagram: 1. Privacy film body; 101. Privacy structure layer; 1011. Transmission unit; 1012. Light absorption unit; 1013. Absorption unit; 1014. Reflection unit; 102. PET layer; 103. PE protective film layer; 104. AG hardening layer. Detailed Implementation
[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0020] Example
[0021] like Figure 1 and Figure 2As shown, one embodiment of this utility model proposes a high-brightness privacy film with high light transmittance, including a privacy film body 1. The privacy film body 1 includes a privacy structure layer 101. A PET layer 102 and a PE protective film layer 103 are sequentially attached to the lower surface of the privacy structure layer 101. A PET layer 102, an AG hardening layer 104, and a PE protective film layer 103 are sequentially attached to the upper surface of the privacy structure layer 101. The privacy structure layer 101 includes a plurality of equally spaced transmission units 1011. A light-absorbing unit 1012 is disposed between two adjacent transmission units 1011.
[0022] When light emitted from the screen of the electronic display device enters the privacy structure layer 101, the light-absorbing unit 1012 in the privacy structure layer 101 can absorb part of the light source and refract and reflect the light. Depending on the incident angle of the light, the light is restricted to a specific viewing angle range. The light within the viewing angle range passes through the transmission unit 1011 and finally passes through the PET layer 102, the AG hardening layer 104 and the PE protective film layer 103 to enter the user's eyes, allowing the user to see clear and bright screen content. The light outside the viewing angle range is refracted or reflected to other directions by the light-absorbing unit 1012 and cannot enter the observer's eyes, thereby achieving the privacy function.
[0023] like Figure 2 As shown, in some embodiments, the spacing between the light-absorbing units 1012 is 5-10 μm. Both sides of the lower part of the light-absorbing unit 1012 are set as inclined surfaces. An absorption unit 1013 is placed at the inclined surface. A reflection unit 1014 is placed between the absorption unit 1013 and the inclined surface at the lower part of the light-absorbing unit 1012. The absorption unit 1013 can absorb the light source that was originally absorbed by the light-absorbing unit 1012 at this part and transmit it to the reflection unit 1014. Then the reflection unit 1014 reflects this part of the light source and reflects it into the transmission unit 1011, thereby increasing the brightness at the transmission unit 1011 part, thus ensuring that the surface of the privacy film is brighter during use.
[0024] The PET layer 102 has a thickness of 20-50μm and is bonded to the privacy structure layer 101 with high-viscosity OCA adhesive. Its surface is hardened to a hardness of 3H or higher, which can effectively prevent the privacy film surface from being scratched and worn, and protect the integrity of the privacy film during transportation and storage.
[0025] The PE protective film layer 103 has a thickness of 20-50μm. It is bonded to the PET layer 102 and the AG hardened layer 104 using high-adhesion OCA adhesive. It possesses a certain degree of flexibility and elasticity, allowing it to cover the outer surface of the privacy film. This prevents the privacy film from directly rubbing against external objects during transportation, storage, or installation, thus preventing scratches, abrasions, and other damage. This protects the optical properties of the privacy film (such as light transmittance and privacy angle) from damage. Its smooth surface reduces the adhesion of dust, fingerprints, and oil stains, lowering the difficulty of cleaning and maintaining a clean film surface. It ensures clear display while having a slight adhesiveness (such as electrostatic adsorption or low-adhesion design). When installing the privacy screen protector, you can first peel off the outer PE film to expose the functional surface of the privacy screen protector, and then accurately attach it to the screen. This avoids direct contact between fingers and the functional layer during installation, reducing fingerprint residue and installation errors. After installation, some PE film (such as the inner protective layer) can be retained or removed as needed. The softness of the PE material can provide cushioning when the privacy screen protector is subjected to slight impacts or pressure, reducing damage to the internal structure of the privacy screen protector (such as optical microstructure, AG layer, etc.) by external forces, and improving the durability of the privacy screen protector.
[0026] The thickness of the AG hardening layer 104 is 20-50μm. The AG hardening layer 104 is bonded to the PET layer 102 with high-viscosity OCA adhesive. The surface is formed with countless tiny concave and convex structures through special processes (such as sandblasting, chemical etching, nanoimprinting, etc.). When external light (such as sunlight, lamplight) shines on the film surface, these structures will convert direct light into diffuse reflection light, reduce the strong light glare and screen reflection caused by specular reflection, and make the picture still clearly visible in strong light environment. It can effectively weaken the intensity of reflected light, improve the contrast and readability of screen content, and reduce the stimulation of light to the eyes. It is especially suitable for long-term use. Combined with the hardening process, the surface hardness is increased to 2H-4H, which is more scratch-resistant than ordinary film materials, can reduce damage in daily use, and extend the service life of privacy film.
[0027] Among them, the PE protective film layer 103 can ensure the ease of installation and surface cleanliness of the privacy film, while the AG hardening layer 104 solves the problems of reflection and visual comfort, together ensuring the comprehensive performance of the privacy film in terms of privacy, light transmission, and durability.
[0028] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A high-brightness privacy film with high light transmittance, comprising a privacy film body (1), characterized in that: The privacy screen protector body (1) includes a privacy screen protector structure layer (101). A PET layer (102) and a PE protective film layer (103) are sequentially attached to the lower surface of the privacy screen protector structure layer (101). A PET layer (102), an AG hardening layer (104), and a PE protective film layer (103) are sequentially attached to the upper surface of the privacy screen protector structure layer (101). The privacy screen protector structure layer (101) includes a number of equally spaced transmission units (1011). A light-absorbing unit (1012) is provided between two adjacent transmission units (1011).
2. The high-brightness privacy film with high light transmittance according to claim 1, characterized in that: Both sides of the lower part of the light-absorbing unit (1012) are set as inclined surfaces, and an absorption unit (1013) is placed at the inclined surface. A reflection unit (1014) is placed between the absorption unit (1013) and the inclined surface of the lower part of the light-absorbing unit (1012).
3. The high-brightness privacy film with high light transmittance according to claim 1, characterized in that: The spacing between the light-absorbing units (1012) is 5-10 μm.
4. The high-brightness privacy film with high light transmittance according to claim 1, characterized in that: The PET layer (102) has a thickness of 20-50 μm and is bonded to the privacy structure layer (101) with high-viscosity OCA adhesive.
5. The high-brightness privacy film with high light transmittance according to claim 1, characterized in that: The thickness of the PE protective film layer (103) is 20-50μm. The PE protective film layer (103) is bonded to the PET layer (102) and the AG hardened layer (104) by high-viscosity OCA adhesive.
6. The high-brightness privacy film with high light transmittance according to claim 1, characterized in that: The thickness of the AG hardened layer (104) is 20-50 μm, and the AG hardened layer (104) is bonded to the PET layer (102) with high-viscosity OCA adhesive.